Ceramics with green glazes were the only high-fired wares produced in Korea during the Goryeo dynasty. The tradition of such high-fired green-glazed wares was first introduced from China around the tenth century. However, by the middle of the twelfth, Korean potters had developed distinctive traditions with shapes and designs that reflect native taste. These Korean wares were extolled in contemporaneous Chinese writings as having the radiance of jade and the clarity of water.